nodejs/test/parallel/test-worker-message-port-tr...

23 lines
734 B
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const { MessageChannel } = require('worker_threads');
const { port1, port2 } = new MessageChannel();
const arrayBuf = new ArrayBuffer(10);
common.expectWarning('Warning',
'The target port was posted to itself, and the ' +
'communication channel was lost');
port2.onmessage = common.mustNotCall();
port2.postMessage(null, [port1, arrayBuf]);
// arrayBuf must be transferred, despite the fact that port2 never received the
// message.
assert.strictEqual(arrayBuf.byteLength, 0);
setTimeout(common.mustNotCall('The communication channel is still open'),
common.platformTimeout(1000)).unref();